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Note 4 - Loans and Allowance for Loan Losses - Loans By Credit Quality Indicator (Details) - USD ($) $ in Thousands	Dec. 31, 2017	Dec. 31, 2016
Total loans	$ 357,458	$ 334,781
FUSB [Member]
Total loans	257,503	239,869
FUSB [Member] | Pass [Member]
Total loans	248,610	231,785
FUSB [Member] | Special Mention [Member]
Total loans	7,255	4,755
FUSB [Member] | Substandard [Member]
Total loans	1,638	3,329
FUSB [Member] | Doubtful [Member]
Total loans
ALC [Member]
Total loans	99,955	94,912
ALC [Member] | Performing Financial Instruments [Member]
Total loans	98,039	93,013
ALC [Member] | Nonperforming Financial Instruments [Member]
Total loans	1,916	1,899
Consumer Portfolio Segment [Member] | FUSB [Member]
Total loans	5,217	6,206
Consumer Portfolio Segment [Member] | FUSB [Member] | Pass [Member]
Total loans	5,155	6,126
Consumer Portfolio Segment [Member] | FUSB [Member] | Special Mention [Member]
Total loans
Consumer Portfolio Segment [Member] | FUSB [Member] | Substandard [Member]
Total loans	62	80
Consumer Portfolio Segment [Member] | FUSB [Member] | Doubtful [Member]
Total loans
Commercial and Industrial Loans [Member]
Total loans	69,969	57,963
Commercial and Industrial Loans [Member] | FUSB [Member]
Total loans	69,969	57,963
Commercial and Industrial Loans [Member] | FUSB [Member] | Pass [Member]
Total loans	67,689	55,481
Commercial and Industrial Loans [Member] | FUSB [Member] | Special Mention [Member]
Total loans	2,066	2,227
Commercial and Industrial Loans [Member] | FUSB [Member] | Substandard [Member]
Total loans	214	255
Commercial and Industrial Loans [Member] | FUSB [Member] | Doubtful [Member]
Total loans
Commercial and Industrial Loans [Member] | ALC [Member]
Total loans
Construction, Land Development and Other Land Loans [Member] | Real Estate [Member]
Total loans	26,143	23,772
Construction, Land Development and Other Land Loans [Member] | Real Estate [Member] | FUSB [Member]
Total loans	26,143	23,772
Construction, Land Development and Other Land Loans [Member] | Real Estate [Member] | FUSB [Member] | Pass [Member]
Total loans	25,872	22,240
Construction, Land Development and Other Land Loans [Member] | Real Estate [Member] | FUSB [Member] | Special Mention [Member]
Total loans	84
Construction, Land Development and Other Land Loans [Member] | Real Estate [Member] | FUSB [Member] | Substandard [Member]
Total loans	187	1,532
Construction, Land Development and Other Land Loans [Member] | Real Estate [Member] | FUSB [Member] | Doubtful [Member]
Total loans
Construction, Land Development and Other Land Loans [Member] | Real Estate [Member] | ALC [Member]
Total loans
Secured by 1-4 Family Residential Properties [Member] | Real Estate [Member]
Total loans	45,073	46,679
Secured by 1-4 Family Residential Properties [Member] | Real Estate [Member] | FUSB [Member]
Total loans	34,272	32,955
Secured by 1-4 Family Residential Properties [Member] | Real Estate [Member] | FUSB [Member] | Pass [Member]
Total loans	33,278	31,995
Secured by 1-4 Family Residential Properties [Member] | Real Estate [Member] | FUSB [Member] | Special Mention [Member]
Total loans	339	213
Secured by 1-4 Family Residential Properties [Member] | Real Estate [Member] | FUSB [Member] | Substandard [Member]
Total loans	655	747
Secured by 1-4 Family Residential Properties [Member] | Real Estate [Member] | FUSB [Member] | Doubtful [Member]
Total loans
Secured by 1-4 Family Residential Properties [Member] | Real Estate [Member] | ALC [Member]
Total loans	10,801	13,724
Secured by 1-4 Family Residential Properties [Member] | Real Estate [Member] | ALC [Member] | Performing Financial Instruments [Member]
Total loans	10,495	13,507
Secured by 1-4 Family Residential Properties [Member] | Real Estate [Member] | ALC [Member] | Nonperforming Financial Instruments [Member]
Total loans	306	217
Real Estate [Member] | Secured by 1-4 Family Residential Properties [Member] | ALC [Member]
Total loans		13,724
Consumer Loans [Member] | Consumer Portfolio Segment [Member]
Total loans	39,300	42,619
Consumer Loans [Member] | Consumer Portfolio Segment [Member] | FUSB [Member]
Total loans	5,217	6,206
Consumer Loans [Member] | Consumer Portfolio Segment [Member] | ALC [Member]
Total loans	34,083	36,413
Consumer Loans [Member] | Consumer Portfolio Segment [Member] | ALC [Member] | Performing Financial Instruments [Member]
Total loans	32,933	35,278
Consumer Loans [Member] | Consumer Portfolio Segment [Member] | ALC [Member] | Nonperforming Financial Instruments [Member]
Total loans	1,150	1,135
Indirect Sales [Member] | Consumer Portfolio Segment [Member]
Total loans	55,071	44,775
Indirect Sales [Member] | Consumer Portfolio Segment [Member] | FUSB [Member]
Total loans
Indirect Sales [Member] | Consumer Portfolio Segment [Member] | ALC [Member]
Total loans	55,071	44,775
Indirect Sales [Member] | Consumer Portfolio Segment [Member] | ALC [Member] | Performing Financial Instruments [Member]
Total loans	54,611	44,228
Indirect Sales [Member] | Consumer Portfolio Segment [Member] | ALC [Member] | Nonperforming Financial Instruments [Member]
Total loans	460	547
Secured by Multi-family Residential Properties [Member] | Real Estate [Member]
Total loans	16,579	16,627
Secured by Multi-family Residential Properties [Member] | Real Estate [Member] | FUSB [Member]
Total loans	16,579	16,627
Secured by Multi-family Residential Properties [Member] | Real Estate [Member] | FUSB [Member] | Pass [Member]
Total loans	16,579	16,627
Secured by Multi-family Residential Properties [Member] | Real Estate [Member] | FUSB [Member] | Special Mention [Member]
Total loans
Secured by Multi-family Residential Properties [Member] | Real Estate [Member] | FUSB [Member] | Substandard [Member]
Total loans
Secured by Multi-family Residential Properties [Member] | Real Estate [Member] | FUSB [Member] | Doubtful [Member]
Total loans
Secured by Multi-family Residential Properties [Member] | Real Estate [Member] | ALC [Member]
Total loans
Secured by Non-farm, Non-residential Properties [Member] | Real Estate [Member]
Total loans	105,133	102,112
Secured by Non-farm, Non-residential Properties [Member] | Real Estate [Member] | FUSB [Member]
Total loans	105,133	102,112
Secured by Non-farm, Non-residential Properties [Member] | Real Estate [Member] | FUSB [Member] | Pass [Member]
Total loans	99,847	99,082
Secured by Non-farm, Non-residential Properties [Member] | Real Estate [Member] | FUSB [Member] | Special Mention [Member]
Total loans	4,766	2,315
Secured by Non-farm, Non-residential Properties [Member] | Real Estate [Member] | FUSB [Member] | Substandard [Member]
Total loans	520	715
Secured by Non-farm, Non-residential Properties [Member] | Real Estate [Member] | FUSB [Member] | Doubtful [Member]
Total loans
Secured by Non-farm, Non-residential Properties [Member] | Real Estate [Member] | ALC [Member]
Total loans
Other Real Estate Loans [Member] | Real Estate [Member]
Total loans	190	234
Other Real Estate Loans [Member] | Real Estate [Member] | FUSB [Member]
Total loans	190	234
Other Real Estate Loans [Member] | Real Estate [Member] | FUSB [Member] | Pass [Member]
Total loans	190	234
Other Real Estate Loans [Member] | Real Estate [Member] | FUSB [Member] | Special Mention [Member]
Total loans
Other Real Estate Loans [Member] | Real Estate [Member] | FUSB [Member] | Substandard [Member]
Total loans
Other Real Estate Loans [Member] | Real Estate [Member] | FUSB [Member] | Doubtful [Member]
Total loans
Other Real Estate Loans [Member] | Real Estate [Member] | ALC [Member]
Total loans

X

- Definition

Amount before allowance of loans and leases held in portfolio, including but not limited to, commercial and consumer loans. Includes deferred interest and fees, undisbursed portion of loan balance, unamortized costs and premiums and discounts from face amounts. Excludes loans and leases covered under loss sharing agreements.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 45
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=82891408&loc=d3e4428-111522

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